FR1125156A - Dispositif de signalisation acoustique - Google Patents
Dispositif de signalisation acoustiqueInfo
- Publication number
- FR1125156A FR1125156A FR1125156DA FR1125156A FR 1125156 A FR1125156 A FR 1125156A FR 1125156D A FR1125156D A FR 1125156DA FR 1125156 A FR1125156 A FR 1125156A
- Authority
- FR
- France
- Prior art keywords
- signaling device
- acoustic signaling
- acoustic
- signaling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1125156T | 1955-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR1125156A true FR1125156A (fr) | 1956-10-25 |
Family
ID=9634370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1125156D Expired FR1125156A (fr) | 1955-04-28 | 1955-04-28 | Dispositif de signalisation acoustique |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR1125156A (fr) |
-
1955
- 1955-04-28 FR FR1125156D patent/FR1125156A/fr not_active Expired
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